Type-writing machine.



f. o. uampei. xcuw, ,TYPE WRITING MACHINE.

APPLICATION FILED fes. 2L 1911.

L@ Paemea Nov. 5,1918,

55m@ (i @W @ma UNITED sra'rns earner LEE s. BURRIDGE, DECEASED. LATE orNEW YORK. N. Y..A BY riTnoIsoBoRRIDGE, y

EXECUTOR, OF NEW YORK, N. Y.. ASSIGNOR, BYv MESNE ASSIGNMENTS, 'TQUNDER- WOOD TYPEWRITER COMPANY, OF NE WARE.

Specification of Letters Patent.

W YORK. N. Y.. a CoRPonAirroN for DELA- PatentedNotnj'i1918.

originai application med'seprember 3o, i915. serial No. 53,220. Dividedand this application sied'rebruary i 27, 1917. Serial No. 151,173. t'

To all chal/rit may concern:

Be itl known that Les S; BtunrDoE, cleceased, late a citizen ot' theUnited States, and late residing` in the. borough of Manhattan, county,city, and State ot New York,

invented certain new and uset'ul improvements in Type-lriting Machines.of which the following is a specification.

The present invention relates toribbonvibrating mechanism tortvpewriting machines. More partieularlv the invention relates tomechanism, ot' this character, in a,

typewriting machine in which the platen is f bar, on the main trame.operable at typestrokes; the vconnection being texible or capable ofaccomn'imlating itselt to the ditierent vcase-lwsitions ot the platentraine, so that the ribbon mechanism need at no time be disconnectedtrom the universal bar. A feature ot' the invention is the constructionand manner ot' shifting the platen trame., whereby the proper relationsot the ribbon n'ieehanism to the platen are maintained in allease-positious of the platen, without. oomA plicated parts or movements.

One ot the lobjects ot' the invention is a simple and novelribbon-vibrating mechanism. shiftable with the platen between two ormore oase-positions; and. in all case-positions. being;r adjustable. toelt'ect a variable throw ot' a biehrolne ribbon. so that one or anotherof the eolor zones thereot may be presented to the printing point at thetypestrokes; or so that the ribbon may be maintained 'silent attype-strokes, for stenC-iling. A feature of this mechanism is the,manner in which thel ribbon vibratorl is supported for oscillation attype-strokes. and in which this support. is adjustable relatively tothevibrator to shorten or' lengthen ,the eli'ective 'by the latter attype-strokes.

ln a preferred torni oit' the invention, the

platen vframe is shittable substantiallr rectlllnearly betweencase-positions, so that theV platen andA the ribbon-vibratingnmechanisinboth have practicallv the`saineniovexnent, and maintain their relativepositions.v On the main frame ot' the machine is a rook shaft, connectedto the universal bar, to be rocked vPivot-ally mounted on theVshit'table traine are two le vers Connected by links toxarnis onthe ri fshaft.` These links form a pernianent and flexible connection betweenthe ribbon meshanism on the platen frame and the universal bar on themain trame.; because. when the platen is shifted, the link merely rocksto another angular position or setting. There are. as usual. two ribbonspools,and each lever actuates a pawl and ratchet,meehanism at one ot'the spools. for turningthat spool.'

The pa wl` and ratehets are arranged to drive the two spools inoppositedirections, and hence. according` to the direeti'on otteed of theribbon. vwhen one meehanisnr operative, the other is inoperative. f

One ot' the two levers operatesthe ribbonfeeding` ineehanisins land`said lever isA also linked to the ribbon-vibratino,ineeiianism tooperateiae latter. The vibra gmeehanism comprises a ribbon-carrier inthe,V torni of a vibratorv arm through which the `ribbon is threaded.and this armis linked to an oseilatory plate. rl`he link t'rom ltheribbonteeding lever carries a pin in a Slot in the oscillatory plate,and this pin is linked to another pin in the same slot-.,whichlatter pinserves as the pivot onwuhoh the plate oscillates. The plateisfsu'pported and guided in its oscillatory movementsby a pinH 1nanother slot in the plate; and this rsupthe printing point. Anothershift of the supporting pin removes the pinl on the link whichoscillates the plate from the slot in the latter, so that, whenstencilng is to be done, the late and ribbon-carrier are silenced.

T is application is a division of applica- 'tion No. 53,220, iledSeptember 30, 1915 (patented December 4, 1917, No. 1,249,022).

Other features and advantages will hereinafter appear.

In the accompanying drawings, Figure 1 is a top plan view, partlybroken,

"of the ribbon-vibrating mechanism, and of ribbon-vibrator, and of itsconnections to the ribbon-carrier, and to the lever by means of which itis actuated.

The platen 10 is journaled in a frame 11 which has letter-feed and'return movement on a frame 12. The frame 12 is connected to the 'mainframe 13 by links 14 at each side thereof, and is shiftable up and downthereon between case-positions, of which there may be three, as shownand described in my co-pending application for Letters Patent, SerialNo. 52,594 filed September 27th, 1915.

The type keys 15 are on levers 16 ulcrumed Each typekey is held Von abladel 17 carried by the main frame. to its fulcrum, and is alsoreturned to normal position after each operation thereof, by' a spring18 which is attached at one end to a 'finger 19 on the key lever and atthe other end at 20, to the rear of the key lever, and which is bentover a plate 21 on the main frame, so that the spring, in tending tostraighten itself, exerts an upward pressure on the key lever. A plate22 also restricts movement of the key levers away from the blade 17. Thekey lever operates in a slot 23 in a front plate 24 of the main frame;and the upper and lower walls of the slot determine the throwv andnormal position of the key lever. Each type key lever has a shoulder 25thereon, adapted, upon depression of the key, to engage and depress auniversal bar v26 pivoted at 27 in yarms '28.,on the main frame. Asuitable spring (not shown) returns the universal bar to normal positionwhen the key is released, and a suitable stop (not shown)'determines thenormal position lof the universal bar and other parts connected thereto.

To ears 30 on the side plates 31 of the shiftable platen frame 12, aresecured cups 32, one at each side of the machine, to receive the ribbonspools 33 and 34. Journaled in ears of brackets secured to the sideplates 'i 31 of the platen frame, are shafts 35, onto each of which oneof the spools is adapted to be placed for rotation therewith.

Fast to each shaft 35 is a hub 40 'secured to a ratchet wheel 53, bymeans of which the spool. is turned step by step at type-strokes. Looseon each shaft 35 is an arm 54; and pivoted to the end of the arm 54 is apawl 56, held resiliently in engagement with the teeth of the ratchetwheel by a spring 57, for turning the ratchet wheel when the arm 54 isvibrated. Pivoted to the base of the cup 32 (see Fig. 1), and heldresiliently to the ratchet wheel by a` spring 58, isa pawl 60 forholding the ratchet wheel when the vpawl 56 is returning to normalpositie after each feed.

Each arm 54 has depending therefrom a 'pin 61 which lies between twoprongs 62, offset horizontally on the end of a lever 63, pivoted at 64,at an intermediate point thereof, to the bracket ear. Pivotallyconnected to the lower arm of eachlever 63 is a link 65, the other endof which connects to an arm 66, fast to a rock-shaft 67, journaled inbracket arms 68, which are secured to a cross plate 69 of the main framenear each side thereof, (see Fig. 3). Also fast to the shaft 67 is anarm 70, connected by a link 71 to the universal bar' 26. Depression ofthe universal bar by a type key therefore rocks theshaft 67, to throwthe links and rock the levers 63, thus edecting a one-step lleed of theribbon. The universal bar, in returning to normal position, also returnsthe levers 63 and pawl-carrying arms 54- to normal position. A preferredmeans for connecting the link 65 t0 the lever 63, and one which permitsof ready separation and 'union ofthe two, is shown in Fig. 3, comprisinga' pivot and spring on the link 65. It will be noted that the link 654maintains the connection of the arm 66, on the main frame, to the lever63, on the platen frame,

in all case-positions, and during the shift l ot the latter. A shift ofthe platen frame merely causes the lever 63 and link 65 to assume adifferent angular position, and the pawlr56 to be moved slightly to adiiierent set position on the ratchet wheel: the-operation of they partsat type-strokes is not changed. The ribbon may` be fed in eitherdirection; and the direction of feed may be reversed when desired.

Between the spools, and just to the left oi' a type guide 84 on thesegment 85, at printing point, the ribbon is threaded through an eye orslot 86d in a carrying arm 86,. At the right of the printing point, theribbon is held and guided between two spring clips 87 and 884 secured tothe platen frame. clip '88 may also serve asa paper guide. 'lhr carrier86 is vibrated at type-strokes, (ei- The i cept in stenciling), topresent the ribbon to the printing point, and thereafter to return it toa normal position below the printing point. The carrier is shown as astrip of sheet metal turned on itself to have a part S9, by means ofwhich it is braced for rigidity. The carrier is on a pivot pin 90 heldin ears on a b 'acket 91 secured to the left-hand side plate 31 of theshiftable platen frame. lts pointI of support thus maintains the same.position with respect to the platen in all case-positions of the latter.The normal, or non-printing, position of the carrier, (shown in fulllines in Fig. 2), is determined by contact of a stop finger 92 on thecarrier against the rside plate of the platen frame. For shifting thecarrier at type-strokes, to the dotted line position in Fig. 2, topresent the ribbon lto the printing point, there is a link '93, one endof which hooks into a hole S01 in the carrier. and the other end ofwhich connects with a vibratory plate 91 on a bracket arm 95 secured toa cross plate 90 forming part of the shiftable platen frame. The bracketarm 95 may also be braced from the side plate 31 of the platen frame bya strip of metal 97T. rll'he plate 91. is slotted at 9S to engage a pin99 on the bracket 95; and pivoted on the pin 99 is a link 100, pivotallyconnected by a pin 101 to a link 102. lVhen the parts are set forprinting, as distinguished from stenciling, the vpin 101 also lies inthe. slot 98, so that reciprocation of the link 102 causes the plate 91to be rocked, (for example, between the full and dotted line positionsof Fig. 41), thereby causing the carrierto be moved up and down with theriblt pin 103 on an arm 101 pivoted to he bracket 95, by engagement withanother slot 105 in the plate 91, controls and guides he plate 91 in itsvibratory movements. 'he link 102 is pivotallv connected at 100 to toelever 03 which operates the ribbon-feeding mechanism, and which, it willbe reinembered, is connected to the universal bar 26 to be vibrated bythe latter at type strokes.

fihis connection, it will also be remembered.

maintained in all oase-positions of the into a slot 109, which, in thisposition of the plate, will extend in the direction of reciprocat-ion ofthe link 102. Reciprocation ot' the link 102, when the plate 91 is soshifted. resultsl in back and forth movement of the. pin 101 in the slot109 without vibration otthe plate 91 or of the ribbon carrier; and theparts are thus set in so-called neutral position for lstenciling. If, onthe other hand. the linger lever 10T is moved tothe left from Fig. 1position, the pin 103 will cause the plate 91 to bev lifted, and at thesame. time shifted angularly to the left. leaving both pins 99 and 101in the slot 98, but with a longer arm from the pin 101 to the point ofconnection of the link 93 to the plate, and also providing for a greaterangular-throw of the plate 94 when the latter is vibrated. This lastsetting of the plate 91 therefore provides for a greater movement of theribbon carrieA at type-strokes than when the parts are set as in Fig. 4,and is the setting for printing from the red Zone of the ribbon. TheFig. 1 setting is the setting for printing from the black zone of theribbon.

For locking the plate 941 in any of its settings, the nger lever 107 hasan extension 110 with three recesses 111%", 1111, and 111Il iu its edge.Adapted to engage the part 110 in any one of these recesses,accoiding tothe angulaiposition of the lever 107. is a pin 112 carried by an arnrll,pivoted at 114 to the bracket 95. A spring 115, connecting the. arm 113to the bracket 95, holds the pin 112 in whichever of the recesses itregisters with, and prevents accidental displacement of the lever 107and plate. 94. The pin 112 is cammed outl by the teeth when the lever107 is thrown to re-set the plate 94. f

All parts of the ribbon-Vibrating mechanism, and of the mechanism forsetting the ribbon for different` colors, and for stenciling, are seento be carried by the shiftable platen frame, excepting only theconnections from the lever 63 to the universal shaft; and even theselastconnections are at all times n'iaintained unbroken. A shift of theplaten frame, as pointed out, changes the angular position of the lever63,41nd 1n so doing shifts the. link 65 somewhat; and the link 65 inshifting, may change somewhat the settingl of the plate 94. This lastchange is not sufficient, however, to affect the described operations ofthe mechanisms at` type strokes. .l

y said' pin and carrying a seco-nd pin in said slot, ineaus connectedto'said link for oscil lating the saine. means t'oi' supporting theplate with the pivot piiiin desired position in said slot duringoscillation thereof', and a ribbon carrier connected to said plate.

2. n a typewriting machine, an oscillatory plate slotted radially withrespect to its pivotal point, a pin which progects into said slot andserves as the pivot on which the plate oscillates, a link adapted to berocked on said pin and carrying a second pin in said slot, meansconnected to said link for oscillating thel saine, a third pin forsupporting the plate in position on its pivot pin, the

plate having a second slot to receive the snpporting pin and to permitot' oscillationot the plate thereon, and a ribbon carrier con'- nectedto saidA plate. f

3. In a typewriting machine, an oscillatory plate slotted radially withrespect to its piv- .otal point, a pin which projects into said slot andserves as the pivot on which the plate oscillates, a link adapted to berocked on said pin and carrying a second pin in said slot, meansconnected. to said link for oscilllating the same, ineans tor supportingthe plate with the pivot pin in desired position in said slot duringoscillation thercot, a ribbon carrier connected to said plate, andAmeans for shitting the plate toa setting in which said second iin isout ot' said slot, so that said link may )e rocked without movement otthe plate and ribbon carrier.

^ Jr. ln a typcwriting machine, an oscillatory plate slotted radiallywith respect to its pivotal point, a pin which projects into said slotand serves as the pivot on which the plate oscillates,l a link adaptedto be rocked on saidipin and carrying a second pin in said slot, meansconnected 'to saiil'link tor oscillating the saine, means torisupporting the plate with the pivot pin inl desired position in saidslot during oscillation thereof, a ribbon carrier connected to saidplate, and means for shifting the plate to .cause said second pin toleave said slot and enter a Slot transverse thereto, so that said linkmay then rock at type strokes without moving the plate and ribboncarrier.

5. In a typewriting machine, an oscillatory plate slotted radially withrespect to its pivotal point, a pin which projects into said slot andserves as the pivot on which the plate oscillatcs, a link adapted to berocked on said pin and carrying a second pin in said?.

slot, means connected to said link for oscillating the saine, a thirdpin for supporting the plate in position on itsl pivot pin, the platehaving a see-ond slot to receive the supporting pin and to permit ofoscillation of -the plate thereon` a ribbon carrier connected to saidplate, and means tor shifting' the snpporting pin with the plate tocanse said second pin to leave said first slot and to enter a slottransverse thereto, so that said link may then rock at type strokeswithout moving the plate and ribbon carrier. A

6L In a typewriting machine, an oscillatory plate slotted radially withrespect to its pivotal pointv` a pin which pro3ccts into .said slot andserves as the pivot on which the plate oscillates, a link adapted to berocked on said pin and carrying a second pin in said slot, meansconnected to said link for oscillating the saine, means tor supportingthe plate with the pivot pin in desired iosition in said slot duringoscillation tliereo a ribbon carrier connected to said plate, and meanstoi' shifting the plate to change the setting ot' said pins in saidslot, so that the.

throw of the ribbon carrier at type strokes may be varied.

7. In a typewriting machine, an oscillatory plate slotted radially withrespect to its pivotal point, a pin which proJects into said ""slot andlserves as the pivot on which the plate oscillates, a link adapted to berocked on said pin and carrying a second pin in said slot., meansconnected to said link for oscillating the same, a third pin forsupporting the plate in position on its pivot pin, the plate having asecond slot to receive the snpporting pin and t0 permit of oscillationot' the plate thereon, a ribbon carrier connected to said plate, andmeans for shifting the supporting pin and plate relatively to the pivotpin to change the throw of the ribbon carrier at type strokes.

8. In a typewriting machine, an oscillatory plate slotted radially withrespect to its pivotal point, a pin which projects into said slot andserves as the pivot onl which the plate osc-illates, a link adapted tobe rocked on said pin and carrying a. second pin in said slot, meansconnected to said link for oscillating the same, a third pin forsupporting the plate in position on its pivot pin, the plate having asecond slotl to receive the-snpporting pin and to permit ol oscillationof the plate. thereon, a ribbon carrier connected to said plate, andmeans for shifting the supporting pin with the plate to change theposition ot' the pivot pin in its slot, s that the throw et' the ribboncarrier at type Strokes niay be varied.

5l. ln a typewriting machine, an oscilla-l tory plate slotted radiallywith respect to its pivotal point, a pin which projects into said slot'and serves as the nivel. on which the i :terently located assente plateoscillates, a link adapted to be rocked on said pin and carrying asecond pin in said slot, means connected to said link for oscillatingthe same, means for supporting the plate with the pivot pin in desiredposition in said slot during oscillation thereof, a ribbon carrierconnected to said plate, and means for shifting the plate in onedirection relatively to its pivot pin to vary the throw .of the ribboncarrier at type strokes, and in slot, means connected to saidlink foroscil' lat-ing the saine, a third pin for supporting the plate inposition on its pivot pin, the plate having a second slot to receive thesupporting pin and to permit of oscillation of the plate thereon, aribbon carrier connectedto said plate, a pivoted carrierfor thesupporting pin, and means for setting said carrier in dilerent angularpositions to change the relative position ot the plate and its pivotpin, so that thethrovvot the ribbon carrier at type strokesinay bevaried.

1l. ln a typevvriting machine, an oscillatory plate slotted radiallywith respect to its pivotal point,y a pin which projects into said slotand serves as the pivot on which the plate oscillates, a link adapted tobe rocked on said pin and carrying a second pin, in said slot., meansconnected to said link for oscillating the same, a third pin forsupporting the plate in position on its pivot pin, the plate having asecond slot to receive the supporting pin and to permit of oscillationof the plate thereon, a ribbon carrier connected tosaicl plate, apivoted carrier for the supporting pin, means for moving said carriertol different Vangular positions to change the relative position of theplate and its pivot pins, so that the throw ot' the ribbon carrier attype Strokes may be varied, and a spring detcnt adapted to engage dii'-retaining means on the car. rier for the supporting pin, to lock theplate in any desired setting.

l2. The. combination with an'ibbon-cartier, of an oscillatingplatelinked thereto, two` linked pivots entering a slot in said plate, meansfor swinging one of said pivots about', the other to oscillatethe plate,and

means for shifting said plate relatively to said pivots to vary thepoint to which the ribbon-carrier will be raised by the oscilla tion ofthe plate,

18. The combination with a ribboncar rier, ot an oscillating plate, alink between said carrier and said plate forming a togglejoint with theplate, a pivot entering a slot in said plate for operating saidtoggle-joint, and a pin supporting'said plate, adapted to be variablyshifted to vary the point to which the ribbon-carrier will be raised.

1%The combination with a ribbon-carrier, of an oscillating plate, `alink between said carrier and said plate forming a togglejoint with theplate, a pivot entering a slot in Said plate tor operating saidtogglejoint, and a pin supporting said plate, adapted to be variablyshifted to vary the. point to which the ribbon-carrier will be raised;said slot comprising an extension in which said pivot may operate idly.

l5. The combination with a lixed pivot, of a linlr journaled on saidpivot, an oscillatf ing link, a tica-ting pivot joining said first linkto said oscillating link, a ribbon-carrier, a connectin nected to saidconnecting link, extensions of both pivots extending into'a slot in saidoperating plate, and means for variably supporting said plate along saidiixed pivot, to vary the point to which the ribbon carrier will beraised.

16. The combination with a. ribbon-carrier, of a slotte-d operatingplate linked thereto, a fixed pivot about. which said plate mayrockentering the slot, a second pivot entering said slot for rocking saidplate, moans for supporting and operating said second pivot, and meansfor variably supporting said plate to vary the point to Which theribbon-carrier Will be raised.

17. The combination with a ribbon-carrier, of an oscillating platelinked thereto, a iixed pivot entering a slot in said plate, anoperating pivot also entering said slot, a third pivot entering a slotin said plate, adapted to shit't said plate along the line of the otherpivots, but permitting oscillation of said plate, and a finger-pieceadapted to variably position said third pivot, to vary the position towhich the ribbon carrier will be raised.

FRANCIS URRDGE, Eaecutor of k-Jael? wt'ZZamZ testament of Lee S.Bw'wflge, deceased. Witnesses:

ANDREW A. JOHNSON, EDITH B. "Linnen,

link, an operating plate con-

